After weeks of rumors – first of a romantic reunion, and now of a falling out -- Rihanna's taken to Twitter with one last (ha! yeah right...) plea: If u don't want me, someone else will ... if I'm not good enough!

The Bajan beauty posted that tweet a little before 7 a.m. Eastern time on Saturday, after weeks of rumors that she and Ashton Kutcher have become an item -- much to the chagrin of Kutcher's nitrous-huffing soon-to-be ex-wife Demi Moore.

The couple has not officially been together for over three years, after the infamous 2009 Grammy incident where Chris Brown was arrested after punching RiRi repeatedly with one hand while driving his car with the other after the two got into a fight. For about three years the two kept their distance, but that all changed around this year's Grammy's.

First, Rihanna and Brown were spotted canoodling at her Valentine's Day bash -- in fact, Chris Brown supposed actually brought nominal girlfriend Karrueche Tran, only to leave her in the car while he was inside flirting with Brown.

After that, the rumor mill kicked into high gear, with some alleging that the couple had secretly been together for up to a year, and even that they were getting married!

Well, those rumors sure seem to have melted away, and now it seems that the relationship, if it even still exists, is rocky, at best. Chris is still being seen publicly with Karrueche, and Rihanna even say Jay-Z and Beyoncé's baby a few weeks ago – something that Jay said wouldn't happen until Rihanna is no longer with Chris.

So, are they finally broken up for good, much to the chagrin of gossip columnists everywhere?

If you take Rihanna's tweet at its 140-character words, then it sure seems so.